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(.No Model.)

G. MLBROWN. Sickle Grinder.

No. 238,844. Patented Mai-ch 15; I881.

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UNrrEn STATES ATENT rrrcEO .GEOBGE M. BROWN, OF DIXON, ILLINOIS, ASSIGNOR OF ONE-HALF TO VIRGINIA H. BROWN, OF SAME PLACE.

SlCKLE-GRIN D ER.

SPECIFICATION formingpart of Letters Patent No. 238,844, dated March 15, 1881.

Application filed August 14, 1880. (No model.)

To all whom it may concern:

Be it known that I, GEORGE M. BROWN, a citizen of the United States, residing at Dixon, in the county of Lee and State of Illinois, have invented certain new and useful Improvements in Sickle-Grinders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form-a part of this specification.

My invention has reference to improvements in sickle-grinders; and it consists,.essentially, in novel devices for adjusting and holding the sickle to the grindstone.

In the drawings, Figure 1 is a rear view of a machine embodying my invention, and showing a part of the sickle as held by it for grinding. Fig.2 is a detached view of the gripe G and clamp B.

The sickles referred to are those of reapers and mowers usually constructed with serrated beveled edges,which require, in the process of grinding, to be held at different angles.

In Fig. l the dotted base H represents the cross-beam of the frame of the grindstone.

G is a plate having the lugs l Z,whicl1 clasp between them thebase H, and by means of the hand-screw m the plate G is rigidly held on such base. The lateral edges of the plate G are beveled and fitted, respectively, inthe grooves f of the plate F, by'means of which 3 5 the plate F,with its superincnmbent machinery,

can be moved at will to and from the grindstone, or be entirely detatched.

E is a plate placed upon and attached to the plate F by means of the nut and bolt 90. The plate E is provided at each end with the upwardly-exten ding flan ges r 1', through which and corresponding downward-extending lugs a n on the bench A passes the rod D, secured by a thread and nut.

A is a bench for the reception of the sickle, and consists of the back'o, the plate 19, and braces g. The plate p extends in front of the back 0, and serves as a seat for the sickle I. At each end of the bench A is provided the 50 recess 8, to receive and assist in holding the sickle I. One of such ends is shown on the left of Fig. 1, connected to such figure, and its relative position shown by dotted lines.

0 is a gripe having at its front end the upward-extending flange y, to clasp the front side of the sickle I. It extends backward under the back 0 in a groove or ways in the upper side of the plate 12, and is held in place by the screw-bolt t, which passes through the slot u in such gripe and a corresponding hole in the platep of the bench A.

B is a clamp eccentrically fulcrumed on the bolt t above the gripe O, and consists of the base a; and handle to, and on the lower face of the base 12 and at its rear end is diagonally located the inwardly-extending flange b. The flange b is fitted to engage any one of the recesses c e on the upper surface of .the rear end of the gripe 0.

The operation of my invention is as follows: The machine is fastened, by means of the lugs ll of the plate G and the hand-screw m, to the beam H of the grindstone-frame. The sickle I is then placed on the bench A, in the recesses s, and on the front end of the gripe C, and against the front side of the back 0, the clamp B being thrown to the right. The flange b is then laterally entered into the end of one of the recesses c of the gripe G, and by reason of the right-hand end of the diagonal flange I) being farther from the plate A the leftward movement of the clamp B tends to draw the gripe O backward, the latter moving in its ways in p,the slot to allowing it to move on the bolt t. By this means the flange y of the gripe O is forced against the sickle and holds the latter firmly against the front side of the back 0, in which position the sickle can be readily pressed against the grindstone by moving the plate F to any desired position in the grooves f. The bench A can be oscillated forward or backward on the rod D to give the sickle such positions that its bevels may conform to the face of the grindstone.

In one of the flanges r is placed the setscrew 9, which prevents any lateral slipping on the rod 1), and by withdrawing the screw 9 and slipping the rod D in the flanges r the plate A and sickle I can be moved laterally, as desired.

By releasing thenut-bolt w the plate E can be rotated on the plate F to adjust any bevel plates E, F, and Gr, the bench A, gripe C, and clamp B, arranged and constructed substan- 15 tially as and for the purpose described.

2. In a sickle-grinder, the bench A, in combination with the gripe O and clamp B, substantially as shown, and for the purpose mentioned.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE M. BROWN.

Witncsses:

B. G. OsBoRN, GYRUs KEHR. 

